For example, there is a function like this:
function a(){
if(stage.color==0xffffff){
trace("The color of stage is White");
}
}
now, is it possible to get a String, XML or anything containing :
//these are the codes inside function "a"
if(stage.color==0xffffff){
trace("The color of stage is White");
}
to see what does a function do?
Thanks.
Reading lines of code at runtime is not possible with compiled languages like Flash technology. With this technology (like many others) you write a code using a language (AS3 for example) in what is very much like text files. Then to complete the process and generate a runnable file (.swf) you have to compile everything. During that compilation those text files full of code are converted to machine readable instructions. That means that the lines of code no longer exist and are converted to something else. So the simple answer to your question is that no it's not possible, the correct answer is that the question doesn't apply. A language like Javascript for example would be a candidate for that question since that code is not compiled.
Related
My github jekyll structure looks like next:
after I enter _posts and create .md file, it looks like:
the corresponding code is:
Generics were introduced to the Java language to provide tighter type checks at compile time and to support generic programming.
The generics looks like:
```Java
List<String> list = new ArrayList<>();
//add item to list
String s = list.get(0);
```
or
```Java
public class Box<T> {
// T stands for "Type"
private T t;
//other code
}
```
The most commonly used type parameter names are:
```
E - Element (used extensively by the Java Collections Framework)
K - Key
```
We can see that the format is nice, such as it has syntax highlight.
I called it preview page
However, when I enter into my page by typing my github page url to see, it likes:
I called it real page
We can see that real page looks bad, e.g. there is no syntax highlight, there are multiple borders for quoting code syntax etc.
Thus, how to make the real page format is the same as preview page?
I suppose that you're relatively new to Jekyll so I have to do some clarification to you.
The result that you call "preview" is the result of your markdown parsed by GitHub. All markdowns have something in common so it's very likely that even if your parser is different almost all the things are parsed similarly. You could see a difference at the beginning of your "preview": the yaml content is displayed as a table.
Let's come back to Jekyll. If you're using the default settings, the parser of your code is kramdown (you could change it in the _config.yml file). When you execute Jekyll, it builds your website. That means that it parses your markdown and convert it to HTML. How it converts to HTML depends on a lot of things based on your configuration and plugin installed.
By default, you have no highlight. If you want to change it, take a look at the jekyll documentation. By default, it uses Rogue but you can also use Pigments or some other highlighter of your choice.
I don't think that this answer covers all your doubts and certainly not all your problems but it's to let you understand that your question, as it was posted, have not so much sense since your "preview page" and your "real page" are two completely distinct things. So google a bit, find what you want to achieve and ask a new question (you will surely have one in the near future).
Happy coding!
In Objective C to build a Mac OSX (Cocoa) application, I'm using the native Webkit widget to display local files with the file:// URL, pulling from this folder:
MyApp.app/Contents/Resources/lang/en/html
This is all well and good until I start to need a German version. That means I have to copy en/html as de/html, then have someone replace the wording in the HTML (and some in the Javascript (like with modal dialogs)) with German phrasing. That's quite a lot of work!
Okay, that might seem doable until this creates a headache where I have to constantly maintain multiple versions of the html folder for each of the languages I need to support.
Then the thought came to me...
Why not just replace the phrasing with template tags like %CONTINUE%
and then, before the page is rendered, intercept it and swap it out
with strings pulled from a language plist file?
Through some API with this widget, is it possible to intercept HTML before it is rendered and replace text?
If it is possible, would it be noticeably slow such that it wouldn't be worth it?
Or, do you recommend I do a strategy where I build a generator that I keep on my workstation which builds each of the HTML folders for me from a main template, and then I deploy those already completed with my setup application once I determine the user's language from the setup application?
Through a lot of experimentation, I found an ugly way to do templating. Like I said, it's not desirable and has some side effects:
You'll see a flash on the first window load. On first load of the application window that has the WebKit widget, you'll want to hide the window until the second time the page content is displayed. I guess you'll have to use a property for that.
When you navigate, each page loads twice. It's almost not noticeable, but not good enough for good development.
I found an odd quirk with Bootstrap CSS where it made my table grid rows very large and didn't apply CSS properly for some strange reason. I might be able to tweak the CSS to fix that.
Unfortunately, I found no other event I could intercept on this except didFinishLoadForFrame. However, by then, the page has already downloaded and rendered at least once for a microsecond. It would be great to intercept some event before then, where I have the full HTML, and do the swap there before display. I didn't find such an event. However, if someone finds such an event -- that would probably make this a great templating solution.
- (void)webView:(WebView *)sender didFinishLoadForFrame:(WebFrame *)frame
{
DOMHTMLElement * htmlNode =
(DOMHTMLElement *) [[[frame DOMDocument] getElementsByTagName: #"html"] item: 0];
NSString *s = [htmlNode outerHTML];
if ([s containsString:#"<!-- processed -->"]) {
return;
}
NSURL *oBaseURL = [[[frame dataSource] request] URL];
s = [s stringByReplacingOccurrencesOfString:#"%EXAMPLE%" withString:#"ZZZ"];
s = [s stringByReplacingOccurrencesOfString:#"</head>" withString:#"<!-- processed -->\n</head>"];
[frame loadHTMLString:s baseURL:oBaseURL];
}
The above will look at HTML that contains %EXAMPLE% and replace it with ZZZ.
In the end, I realized that this is inefficient because of page flash, and, on long bits of text that need a lot of replacing, may have some quite noticeable delay. The better way is to create a compile time generator. This would be to make one HTML folder with %PARAMETERIZED_TAGS% inside instead of English text. Then, create a "Run Script" in your "Build Phase" that runs some program/script you create in whatever language you want that generates each HTML folder from all the available lang-XX.plist files you have in a directory, where XX is a language code like 'en', 'de', etc. It reads the HTML file, finds the parameterized tag match in the lang-XX.plist file, and replaces that text with the text for that language. That way, after compilation, you have several HTML folders for each language, already using your translated strings. This is efficient because then it allows you to have one single HTML folder where you handle your code, and don't have to do the extremely tedious process of creating each HTML folder in each language, nor have to maintain that mess. The compile time generator would do that for you. However -- you'll have to build that compile time generator.
LightTable has code folding since v0.6.1, it's key binding is C-= by default. It works for Python files out of the box, but it does nothing with Clojure files. The Codemirror code sets fold to "indent" at https://github.com/LightTable/Python/blob/master/codemirror/python.js#L351. My question is how can I add code folding to a file type that's not handled by Codemirror by default. I'd like to do it without having to touch a js file, hopefully writing only a little ClojureScript in my user settings.
Unfortunately folding needs a folding helper function that will starting from a given position seek the start and end position for the fold. These currently exist for languages that use braces (like java, c++) or indentation (python). So, unless someone writes a helper function that can parse s-expressions and find where to fold them, folding in clojure will not work.
I have an SSRS 2008 report with a field that contains and is configured to render as HTML. Some of the text in this field may contain IMG tags, and the IMG tag is not among the tags SSRS natively supports within its HTML rendering extension.
I am trying to find a way to write a custom handler to hook into the processing of this field that will let me look at the raw HTML before the SSRS handler processes it, in the hopes of grabbing IMG tags, extracting the SRC URL and getting the raw bytes of an image to insert on the fly in a way SSRS will accept, yet retaining the HTML SSRS will render.
From what I've read and seen so far, if a field is marked to render as HTML, the SSRS processor grabs it and parses it entirely before any handler could modify it, meaning the IMG tag is (would be) discarded before I could do anything with it (or even know it was present). The only option I see is to turn off the HTML rendering entirely, thus losing the benefit of the tags SSRS can recognize.
EDIT: Per Jamie's response below, I'm beginning to think the "2nd half" of this issue may prove harder than I realized: Is it even possible to programmatically add an Image to an SSRS Report at runtime (obviously through code/custom assembly)? That is, I'd like to write some code that might look something like this (pseudocode)
'Conceptual Pseudocode I'd like to be able to write
'for dynamic addition of Image element in SSRS report
'Is this even possible?? Is there a documented Report
'object model??
Public Function AddImage(imageBytes() as Byte) as Image
Dim newImage as New Image()
newImage.SetBytes(imageBytes)
Report.Add(newImage)
return newImage
End Function
I'm hoping I'm just overlooking something simple that prevents me from grabbing the raw, unprocessed HTML, and someone else might be able to point me in the right direction on how to grab it.
EDIT: I have created and implemented this solution within the SSRS development environment and it works. WOOHOO :) It did require some hoop-jumping with creating a Single-Threaded Apartment thread to host the WebBrowser control, and to create a message pump, but it does work! **
As I was literally typing up the message to a co-worker that this issue was a non-starter, I did have a bit of an inspiration on a way to solve this problem. I know this post hasn't generated a great deal of response, but just in case someone else finds themselves in a similar problem, I'm going to share what I've implemented in a "petri dish" scenario that, provided I get all the code permission issues resolved, should allow me a decent solution to this problem.
With SSRS inability to handle an IMG tag insurmountable, I actually thought of an idea that took the HTML rendering away from SSRS entirely. To do this, I created custom code that hands off the HTML rendering to a WebBrowser control, then copies the rendered result as an image. It does the following:
Instantiates a WebBrowser control of a given width and height.
Sets the DocumentText property of that control to the HTML from TinyMCE
Waits for the DocumentText to completely render.
Creates a bitmap equal to the size of the control.
Uses the undocumented and presumably unsupported DrawToBitmap method of the WebBrowser to draw the rendered HTML to a bitmap.
Copies the Bitmap to an Image
Saves the Image as a .png file
Returns the path to the .png as the result of the function.
In SSRS, I plan to replace the erstwhile HTML text field with an external Image control that will then call the above method and render the image file. I may alter that to simply draw the image to the SSRS Image control directly, but that's a final detail I'll resolve later. I think this basic design is going to work. Its a little kludgey, but I think it will work.
I have some permissions issues to work out with the code that SSRS will allow me to call at runtime, but I'm confident I'll get those sorted out (even if I end up moving the code to a separate assembly). Once this is tested and working, I plan to mark this as the answer.
Thanks to those who offered suggestions.
I've done something similar with success: We had an HTML "Comment" field that was collected on a web form. For a particular report we wanted to truncate this field to the first 1000 characters or so, but preserve valid HTML.
So I created a C# .dll & class with a public function:
public static string TruncateHtml(string html, int characters)
{
...
}
(I used the HtmlAgilityPack for most of the HTML parsing, and to create and close off my new HTML string, while I kept track of the content length.)
Then I could call that code with the fully qualified path to the function in an SSRS expression:
=ReportHtmlHandler.HtmlTruncate.TruncateHtml(Fields!Comment.Value, 1000)
I could have added a calculated field to my dataset with this, but I was only using this value for one field, so I kept it at the field expression level.
All of this code gets called well before the HTML is processed or rendered by SSRS. I'm sure that any original IMG tag will be in the string.
This approach might work for you, possibly create a ExtractImg function which could be set as the source of an img on the report. I think some of the tricky bits for your requirement will be to handle multiple images as well as embedding the extracted img. But you might be able to do this simply with a external reference to an image. I haven't done much with external images in SSRS.
An MSDN blog entry on calling a custom dll from SSRS: http://support.microsoft.com/kb/920769
I declare my GLSL ES shader program within a HTML file, using this code:
<script id="shader-fs" type="x-shader/x-fragment">..shader-code..</script>
as seen in the learning WebGL examples. Everything works fine, but I dont understand why I should use the type attribute of the script tag. I want to know where the "x-shader/x-fragment" value is specified. Who does that.. the W3C, the Khronos Group or the browser developers? Can anybody help me? Tahnk you.
There is no official organization who specified that GLSL code should be put within a <script> tag of type "x-shader/x-fragment".
The only reason the GLSL code is placed within that <script> tag is because the tutorial writer decided his code would be cleaner if he placed the GLSL code within a <script> tag rather than a normal string.
However since WebGL takes in GLSL code as a string value, the author had to write a helper function called getShader(gl, id) to grab the script tag from the page and convert it into a javascript string, before passing it to WebGL.
The reason the author chose a type value of "x-shader/x-fragment" is because "x-shader/x-fragment" is not a known script type by the browser and thus would be safely ignored by the browser.
The idea is that the browser doensn't know the type 'x-shader/x-fragment'. Your code will work fine if you change the type to something else (like 'foo').
In other words there is no standard for how to store shader source code. But you will need it as a string when the shaders are compiled.